Mill for rolling shapes



G. BAEHR MILL FOR ROLLING SHAPES Original Filed Julyfl, 1918 3Sheets-Sheet 1 71j# war/6- MILL 'FOR ROLLING 'SHAPES Original `FiledJuly 3l, 1918 3 Sheets-Shee*l 2 Wmv-Ness Nov. 2l, 1923.

G. BAEHIR MILL FOR ROLLING SHAPES original Filed July 3l, 1918 3Sheets-Sheet 3 Ilm/@www2 To aZZ'wLom t may conce-rn.'

Patented Nov. 2 0, 1923. A

ige/tee@ GEORGE BAM, F CORAOJPOLIS, JPENNSYLVANM i mL ron ROLLINGsnsccns.

@riginal application filed July 31, 1918, Serial No. 274,659. Dividedand. this application led October 19,

1920. vSerial No. 417,729.

B e it known that I, GEORGE Bansin, a citizen of the United States,residing at Coraopolis, in the county of Allegheny and State ofPennsylvania, have invented newl and useful improvements in Mills forRolling Shapes (for which I have filed applications in England November5, 1919, Patent fo. 158,375, and in Canada March 10, 1919,

lPatent No. 195,958), of which the followin a specification. dyinvention relates to mills for rolling shapes, and more particularly tomills 'which are provided in their Working faces with die grooves of-therequiredshape to form, from metal bars or the like, articles of adesired form.

The object of this invention is to prol vide micrometer adjusting meansforv obtaining accurate registry of the die grooves in the coact-ingworking faces of the rolls, and preventing the accidental changing ofthe adjustment. n

v'llhis application is a divislon of my application Serial Number247,659, tiled July 31, 1918, now Patent No. 1,448,371, granted March13, 1923. l

Referring to the accompanylng drawings which illustrate one form of thepresent 1nvention, Fig. -1 is an end ,elevation vthereof with a ortionbroken away; Fig. 2, is in part a side elevation and in part a centralvertical section on the line I--IL F1g. 1; Fig. 3 is a detailed viewshowing a portion of a roll'housing and the manner of mounting one ofthe rollr shafts thereon; Fig. 4 1s an elevation of a driving gear forone of the roll shafts; Fig. 5 is an elevation of the same gear showingthe same applied to the shaft witho the adjusting means in place; Fig. 6is ay section on the line Vl-YL Fig. 5; and' Fig. 7 is a section on theline Vil-3TH, Fi 5.

Y ulneral 1 indicates the concrete foundation of the mill into which isbolted a metal base plate 2. To this base plate is bolted the base 3 ofthe roll frame or houslng vwhich comprises four upright membersopposite1y` disposed in pairs, 4 and 5, connected at their tops by crossmembers 6 and 7. One

lsuch pair of upright members 4 and 5, is

situated at each end of the roll stand, the

'members of each pair `facing each other, and

zontal notches 9. Mounted in these frames i 'are the bottom roll 10 andtop roll 11, keyed respectively to the shafts 12 and 13,` with theirfacesv substantially in contact, in the usual manner,l and carryingremovable segmental shapin members 14 in which are formed the diegrooves. The segmental Vmembers 14 are formed with beveled ed esretained under a supporting vertical co ar.

of notches 9 inthe uprigh'ts 4 and 5, and

screws 23 having locking nuts 24, which are threaded through said crossmembers 21 and ifo engage the boxes 19- of the bearings and thus f clampVsaid bearings yrigidly against the seats orlsupports 20. The shaft 12extends (to an out-bearing 25 mounted on the concrete foundation, and isprovided With a pulley 26 for driving the same. Any other The shaft 13of the upper roll is supported by cross .members 27 similar to themembers 21 and provided with' lateral flanges 22 fitting into theuppermost pair of driving means for lthe rolls may be ,substiso tuted,however. Y f

notches 9 in the upright frame members. f

Journal boxes 29 enclose the bearings 30 of shaft 13, and are supportedon coiled sprin 38 which rest on the cross members Bearing against the-top of the journal boxes 29 are abutment members 32 in the form ofsition. To secure proper alinement in a vertical plane of the shapinggrooves in the oo operating rolls, said rolls are arranged to lbeadjusted axially by means of set screws 28*I3 threaded through theplates 28 and having lill@ their ends contacting with the bearings ofthe roll shafts, so that by properly adjusting said screws, the rollshafts and the rolls mounted thereon may be moved axially.

The rolls shown in the drawings are the largest which can be used in theparticular stand illustrated. When it is desired to use rolls of smallerdiameter in the same stand, the rolls 10 and 11 are taken out, thedesired rolls substituted therefor, and the bearings therefor supportedat the proper positions b simply moving the cross members 21 an 27 ytothe other parts of supporting notches 9. The cross supports 21 for thelower shaft are moved up to the set of notches just above those withwhich they are shown as engaging, the bottom supports 2O are built up byblocks or otherwise, to bring the journal boxes up to the necessaryposition, and the roll shaft is then clamped into sition by screws 23 aswill be obvious.

ikewise, :tor the upper shaft, the cross supports 27 are moved to theset of notches 9 just below those in which they are shown as engaging,and the abutment screws 32 are turned down to the necessary positionuntil the roll faces are in proper working relation. By thisadjustmentthe feeding mechanism operates on the same level as with the first orlarger set of rolls. As shown in the drawings, the notches 9 are solocated as to accommodate a set of rolls of exactly onehalf the diameterof the rolls 10 and 11. lf, however it is `not necessary to have thefeeding mechanism always on the same level, or if a vertical adjustablefeed mechanism is provided, rolls of still different sizes can besubstituted in this housing by mounting the lower roll shaft in thepositionshown in Figs. 1 and 3, and with the upper roll supports in oneof the sets ofynotches 9 below the position of the upperl roll supportsshown in Figs. 1.and 3.

ln order to maintain. continuous exact registry of the forming groovesin the faces of the rolls', the roll shafts 12 and 13 are positivelygeared together by means of a gear wheel 34 onnthe shaft 12 and whichmeshes with and drives an intermediate gear 35 which in turn meshes witha similar gear 36 and this in turn meshes with a gear 37 secured to theshaft 13 of the upper roll. Consequently, continuous synchronism iny therotation ofthe rolls is insured.

To adapt this interconnecting gearing to the rolls of diferentsize inthe same housing, the ears 37 and 36 are mounted on stub sha s 35'* and36a mounted in horizontal ways 38 and 39 in extension 40 on the.vertical frame members 4.. When smaller rolls are substituted for thoseshown, the shafts 12 and 13 are necessarily lcloser together, and toallow for this, the gears 35 and. 36 are merely moved outwardly in thehorlzontal ways 38 and 39 to the required i by loosenin distance, whilemaintaining the proper relations ofthe four gears, and are then clampedin that position. The result is merely to change the relative positionsof the gears without in any way changing their positive inter-drivingrelations.

' ln order to initially secure proper registerring of the portions ofdifferent sizes of the forming grooves in the faces of the rolls, it isnecessary to adjust one of the rolls circumferentially relative to theother, and this adjustment must be very accurate. F or this purpose oneof the driving gear perimeters is separate from an adjustable webportion 43 movable relatively to its hub portion.' As shown, the uppergear 37 comprises a sleeve or hub portion 41 which is fixed to the shaft13, and has a circular flange or web 43 extending outwardly therefrom,which web is provided with holes for bolts 44 and with a segmental slot45, and at each end of said slot with a raised lug 46 provided with athreaded hole for a set screw 47. The peripheral portion ofthe gear 37is provi-ded with a large central opening 48 fitting loosely over thesleeve or hub portion 4l, and its web portion 49 is provided with curvedconcentric slots 50, adapted to receive the bolts 44, and is alsoprovided with a projecting lug 51 extendingthrough the curved slot 45 inthe web 43 of the hub portionJ as shown in Figs. 5, 6, and 7. ln this.position the adjusting screws 47 bear upon the opposite sides of lug51, and by advancing one screw and retracting the other, the lug may bemoved to any desired position within the limits of the slot 45, andlocked in that position. Consequently the bolts 44, and advancing onescrew 4 and retracting the other, the upper roll may be slightly turnedwithout movement of lts driving gear face 37, and without movement ofthe lower roll, thereby very accurately adjusting said roll relative tothe lower roll, after which it is locked in position by tightening thebolts 44 to clamp the peripheral portion of gear 37 to its hub or webportion and again make the driving gear rigid with the shaft of theroll. This permits a ver rapid micrometric adjustment of the ro surfacesto secure exact registration of the/forming grooves.

have omitted` the feeding mechanism which forms no part of thisapplication and is fully shown and described in my Patent Number1,448,371, of which the present application is a division.

The construction and arrangement described provides a roll housing inwhich forming rolls of several sizes may be mounted and in a manner topermit them lto be easil changed; also means for positively driving bothrolls in exact synchronism, thus insuring continuous registration of thedie faces in definite relation to each other; and

3l ,474,880 l [E also means for rotatably adjusting one of the rollsrelative toits driving means without removing it from its bearings tosecure proper'initial registry of the forming surfaces of thecooperating rolls. The many uses and advantages of these features willbe apparent to those familiar with the art.

I-c aim:

1. In combination, a pair of rolls for forming articles of varying crosssection, shaft members therefor, a housing in which said shaft membersare mounted, intermeshing gear members connecting said shafts, and meansto adjust one shaft member rotatably with respect to its driving gearmember, the said means comprising a lug carried b v one of the last twonamed members and a screws carried by the other of said two members andcontacting with the lug on opposite sides thereof.

2. ln combination, a pair of rolls provided with die faces, shaftmembers therefor, a housing in which said shaft members are mounted,intermeshing gear members connecting said shaft members, `one of saidgear members having a rotatably adjustable connection with its shaftmember, means to adjust one shaft member rotatably with respect to itsAdriving gear member, the said means comprising a lug carried by one ofthe last two named members and screws carried by the other of said twomembers and con-- tacting with the lugv on the opposite side thereof,and means for locking said last named gear member to said last namedshaft member in various adjusted positions 3. In combination, a pair ofrolls provided with die faces, shafts therefor, housings in which saidroll shafts are mounted, intermeshing gears connecting said roll shafts,and micrometer means to adjust one of said rolls relative to its drivinggear and comprising a sleeve keyed to the roll shaft, a

gear surrounding said sleeve and provided with a web having a slot, alug on said sleeve extending through said slot, and screws mounted onthe gear and contacting with said lu on opposite sides thereof.

4. In combination, a pair of rolls provided with odie faces, shaftstherefor, housings in gear surrounding said sleeve and provided with aweb having a slot, a lug on said sleeve extending through said slot,screws mounted on the gear and contacting with said lug on oppositesides thereof, and means to clamp said sleeve to the said gear web.

5. In combination, a pair of rolls provided with die faces, shaftstherefor, housings in which said roll shafts are mounted, intermeshinggears connecting said shafts, and means to adjust the relation of oneroll shaft to its gear comprising a sleeve keyed to the roll shaft and'provided with an outwardly projecting web, the gear surrounding saidsleeve and provided with an inwardly projecting web having a slottherethrough, a lug on the sleeve web extending through said slot, lugson the web of the gear on opposite sides of the slot, and screwsthreaded through said lugs and bearing against said first named lug fromeach end of the slot, whereby to adjust ythe gear rotatably relative tothe sleeve.

6. ln combination, a pair of rolls provided with die faces, shaftstherefor, housings in which `shafts are mounted, intermeshing gearsconnecting said4 shafts, and means to adjust the relation of one rollshaft to its gear comprising a sleeve keyed to the roll shaft andprovided with an outwardly projecting web, the gear surrounding saidsleeve 'and provided with an inwardlv projecting web having a slottherethrough, a lug on the sleeve web extending through said slot, lugson the web of the gear on opposite sides of the slot, screws threadedthrough saidv of October, 1920.

' GEURGE BAEHR.

